Hand lamp



H. F. NYGARD Feb. 17, 1931.

HAND LAMP Filed June 19, 1928 2 Sheets-Sheet l nNvENToR {lj/ga f a ATTORNEYS.

Feb. 17,1931. H, F NYGARD v1^,'19z,54'1

HAND LAMP Filed June 19, 1928 2 Sheets-Sheet 2 INVENTOR M PNJ/gard ATTORNEYS Patented Feb. 17, 1931 UNITED STATES PATENT 'ol-FlelrzA HALVARD F. NYGARD, or MADISON, WrscoNsN, AssIGNoR To enseres BATTERY COMPANY, or MAnisoN, wIscoNsiN, A coaroneTIoN or WiscoNsiN fY HAND LAMPA Application filedV Junel,

My invention relates to a battery hand lamp which consists of a drycell battery with a cup at the top thereof, the cup containing an ini candescent bulb in 'aseparable head so constructed as to be capable of being flipped by the thumb or linger into either the operative or inoperative position.

the hand lamp disclosed and claimed in the 1o application of John S.Y Zoek, Serial No. 225,045, fledOctober 10, Y1927 (now Patent No. 1,701,093, granted February 5, 1929). It is an object of my invention to provide a hand lamp of the type described in said applica# i5:` tion wherein the incandenscent bulb is removably and Iadjustably fmounted ,in the separable head. It is a further object of `my invention .to provide aA socket holderv wvhich, in the inoperative position, will fit closely over the top edges of the cup and present a more Vfinished appearance. Further objects and advantages will be made clear by the following detailed description, which is to be taken in conjunction with the accompanying drawings, wherein: Y s

l Fig. 1 illustrates in partvsectional elevation the whole ofthe battery hand lamp with the incandescent bulb in solid lines for the opera- 4tive position and in dotted lines'for the inoperative position; Y .i

Fig. 2 illustrates in part sectional eleva- .tional .the separable head with the socket in full lines for the normal position and in dotted lines for the position permitting the in- Y Vsertion or removal of the bulb;

Figs. 3 and si are side and end views respecn tively of the sheet metal backing Amember comprising myimproved socket holder Figs.v 5, v61, and 7 arevariousvicwsof the bulb socket. Y Y iV Y.

Fig. 8 isa sectional view of a modiiedloulb socket which carries a connecting member in its lower lend. Y f .Y f Y Y `:1n the preferred form of my inventioml Y employ va battery consistingof one or more c dry cells 1 and 2 electrically connected as byv -connegctor The battery is arrangedniiie suitable carton 4, .Which-may be of paper, and

;.te form an oval'cup.l In this cup VI'place a My invention vrelates to improvements in base of bulb 15, and outwardly v1928. Serial No. 286,620.

metallic cup 5, which is electrically connected to one of the poles of the battery, preferably by soldering to the negative can as at 6. An

opening 7, in the bottom of the metallic cup Vinsulating paper 9. This sheet of Vinsulating paper maybe extended'and bent down to orm an insulating. separating sheet 10 be; tween cells 1 and 2, in which case the cells need not have individual paper wrappers over the Zinc cans. A layer of fusible sealing inaterial 11 may rest upon the bottom of carton 4 and the lower ends of cells 1 and 2 may be imbedded therein. The sideedges ofropening are bent up, as at 12, for a purpose to be explained hereinafter. At the end of the cup opposite to opening 7 wings 13 are formed as by punching in the sides of the cup 5, the'purpose of these wings t0 be eplainedhereinafter. A smalllug lliis formed on the bottom of the cup at the end removed from opening7, as by stampingthe metal.

An incandescent bulb 15 is mounted, as by Y screwing, in bulb socket 16 which is shown in detail in Figs. 5, 6 and 7. The socket` 16, preferably of sheet metal, is cylindrical in form with one side longitudinally open, as at 17. The edges of opening'l? are provided -with outwardly projecting flanges 1S. The

opposite'side of the socket may contain circular opening v19. Grooves or threads ,20, Vconforming to the pitch ofthe threads on the projecting lugs 21 are provided in the socket. l j j The bulb socket 16 iscarriedby a holder consisting ofva backing member 22 which is fashioned,'as by stamping,l from a single piece ofmaterial preferablysheet metal and has two integral cams 23 dependingfrom the lll).

sides thereof (see Fig) Each cam 23 `contains `raised portion 2&1l in which a hole25 is stampedor drilled. f Adjacent one sidey of raised portion24 and spaced slightly there-V from is a hole 26. Adjacent the otherside of raised vportion 24: is an inwardly stamped lug j j n .27,which vmay be longitudinal as 'shown or Y which projects above the top of thedry cells ff may be round. Socket 16 is mountedl between Socket 16 is thus free to pivot into positions such that its axis is perpendicular or parallel to backing member 22 as shown in dotted and full lines respectively in Fig. 2. l/Vhen socket 16 is perpendicular to backing member 22, as shown in dotted lines in Fig. 2, bulb 15 may be screwed into or out of said socket 16. Assuming that the bulb has been screwed into the socket, the latter isV then swung into the parallel position shown in full lines. Lugs 27 compress socket 16 and squeeze it together sufficiently to make it diflicult to turn bulb 15. The compressibility of socket 16 is facilitated by circular opening 19. Lugs 27 exert compression upon the sides of socket 16 slightly to one side of their middle portion and cause flanges 18 to press against backing member 22 thereby simultaneously holding the bulb in position and locking it in the socket. To remove or adjust the position of the bulb, the thumb or linger is wedged between the bulb 15 and backing member 22 and the bulb swung back into the dotted position of Fig. 2, in which position the bulb can be readily unscrewed from its socket as it is free from pressure exerted by lugs 27.

Looped spring 31 of Fig. 2, preferably of wire, is bailed to holes 25 in cams 23. Raised portions 24 allow the stub ends of spring 31 to move from one position to another without interfering with socket 16. The holder pivots on this bail when it is flipped from the operative to the inoperative postion and vice versa.

Fig. 8 illustrates a modification which l may choose to embody in my preferred form of socket. The lower edge of the socket 16 may contain flange 28. Upon the ledge formed by flange 28, I may support circular disc 29 of bakelite, heavy paper, or othersuitably rugged insulating material. Disc is provided with a small central hole in which is fitted a metallic connecting member 30. Bulb 15 is adapted to be screwed down into socket 16 so that its end terminal is maintained in contact with connecting member 30.

The holder cooperates with the battery having the cup 5 mounted as described by slipping the looped spring wire 31 underneath wings 13 and over `lug 14 so that the base of bulb 15 will Contact with the terminal of the battery exposed through opening 7 `when the head is in the position shown in solid lines .in Fig. 1. Thepressure of wings 13 insures a good contact between the'base ofbul'b V15 and Athe exposed pole 8 of the battery. In -the event that Vthe'constructionshown `in 8 1s used 'the above mentioned contact is established by means ofconnecting member 30. Since the cup is electricall-yconnected to one pole-of 4the battery atf6, electrical connection is made to the zscrewthread 'of the' v`lamp through socket 1'6"whichis in contactwith the backing :member .22:in severalplacesjhe member 22,"i-n turn, ybei-ngin contactwith `cup 5 at several points. When the holder moves from one position to the other the corners of cams 23 slide on the bottom of cup 5 and pass beyond the opening 7. The turned-up edges 12 prevent the corners of cams 23 from slipping into opening 7. To put the hand lamp in the inoperative positionthe backing member 22 is flipped forward to the position shown by broken lines in Fig. 1. The looped spring 31, which remains, in practically'the same position during this operation, by its cooperation with lug 14, prevents the backing member 22 from interfering with the sides of cup 5 which are always in close proximity. The end terminal of bulb 15 is then no longer in Contact with exposed pole 8 of fthe battery, and the bulb is no longer lighted. The looped spring 31 still acts to maintain the holder firmly in position. The corners of cams 23 are so shapedthat when the holder is flipped into'either position it assumes such position with a snap since the spring pres sure is greatest at the intermediate position. This insures against the holders beingin-any other position than `the operative or the inoperative positions and, furthermore, prevents the holder from being readily moved into the operative position lto accidentally light ithe bulbwhile the :hand lamp is being carried in the pocket or-elsewhere. When the holder is inthe inoperative position, the backing member 22 covers the top of 'the cup, fitting very closely along the edges of the cup, and forming a closure therefor. Lip

32 projects slightly beyond the end of cup 5 as shown in dottedV lines in Fig. 1. The lip 32 thus acts as a stop for the holder when. it has reached the proper inoperative position and protects the bulb against injury by shock during the act of flipping the holder into the inoperative position or in the event that the vhand lamp is accidentally struck against a rigid object. When in the opera tive position backing member 22 acts as a reflector and may be polished or plated to enhance its value in that respect.

Repeated operation of the holder exerts a hammeringelfect upon pole 8 of cell 2 and, when the cells rest upon 'the bottom of carton 4, the hammering tends to drive cell 2 lower than cell 1 with the result that the end terminal of bulb 15 may soon fail to make Contact with pole-8. Layer of sealing material 11 provides a more rigid base for the cells and overcomes the above named'objection. i

In Vthe `operativeY position-the lower end of backing member 22 rests against the ends of turned up edges 12whicl1'act as a stop. The

V'bulb may be further adjusted so that,in l'this position, the vbase terminal contacts'with `ter- "minal 8,-thus providing "proper contact and a twojpoint 'suspension for' the lamp-head.

leiste?. l '-1.' AIn' abattery hand lamp, afbattery,a 'cup ci of) i cams,

u, when in said parallel position to prevent the turning ot' said bulb withinsaid socket.

2. In a battery hand lamp, a batteiy, a cup above the top of said battery, a socket holder in said cup, said socket holder comprising va backing member, cams depending from the sides of said backing member, a cylindrical bulb socket pivotally mounted upon said an incandescent `bulb removably mounted in said socket, means'in said socket to pivot the axis thereof substantially paral-v lel and perpendicular respectively to said v backing member, and means in said cams to.

compress said socket when in said parallel position and to maintain said socket in said parallel position. Y

8. In a batteryhand lamp, a battery, a cup above the top of said battery, a socket holder in said cup, a bulb socket pivotally mounted upon said socket holder, and an incandescent bulb mounted in said socket, said bulb beingV removable when said socket is in one position and being incapable of Aremoval when said socket is in a second position With respect to said holder. Y Y I 4. VA separable head for a hand lamp battery comprising a socket holder, a bulb socket pivotally mounted in said holder, a means in said holder cooperating With means in said socket to retain said bulb firmly in place Within said socket When said socket is in one from said socket when said socketcis in a second position with respect to said holder.

5. A separable head for a hand lamp battery comprising a holder, a bulb socket pv-r and socket in said cup, an incandescent bulb removably mounted in said socket, cooperating means in said socket and said holder to allow adjustment of the position of said bulb in said socket and to lock said bulb in said adj usted position.

8. In a battery hand lamp, a battery, a

socket holder mounted on said battery, a bulb l socket pivotally mounted in said holder, and a lamp bulb mounted in said socket, said lamp being removable from said socket when said socket is in one position and being incapable of removal when said socket is in a second position with respect to said holder, said socket holder and-bulb being adapted to be moved to an operative or inoperative position.

9.v A separable head for a hand lamp comprising a holder, a bulb socket pivotally mountedrinsaid holder and adapted 4to. be moved into positions substantially parallel ,and substantially perpendicular respectively to said holder, and cooperating means on said socket and said holder to maintain said socket in said parallel position.

In testimony whereof I affix my signature.

HALVARD F. NYGARD.

position, said bulb being readily removable l otally mounted in said holder, and a bulbv Y mounted in said socket, said socket, when in one position, beingl adapted to lock said bulb in place, and While in a second position, to

permit said bulb to be easily removed.l

6. A separable head for a hand lamp battery comprising a socket holder, a bulb socket mounted in said holder, an incandescent bulb Y removably mounted in said socket, co-operating means in said socket and said `holder to allow adjustment of the position of said bulb in said socket and to lock said bulb in said adjusted position. j c

7. In abatteryhand lamp, a battery, a cup above the' top of said battery, a socket holder les j 

